Oil filter wrench

Abstract

The present invention discloses an oil filter wrench comprising a wrench body having an axial hollow space at the center of a surface along one end of its axis, and each of the both surfaces of the axial hollow space has a sliding groove parallel to each other, and a driving device being disposed at the center of the surface along the other end of the axis for the mounting of a cylindrical driver; a pair of clipping members being pivotally coupled to two sliding grooves of the wrench body by means of sliding displacement, and its thickness corresponds with the parallel position and has serrations on them. A tong is disposed on each end of the corresponding axes for interlocking with a circular edge of the oil filter; a serrated gear being disposed at the axial hollow space of the wrench body by means of the predetermined pivotal coupling, and a gear section being disposed at the external diameter of the surface along the axial direction for mutual coupling with a pair of serrations of the clipping member, and a ratchet section being disposed at the lower external diameter of the surface along the axial direction and one of its end is for pivotally coupling a ratchet claw with blocking function; an elastic component is single-directionally coupled to the axial hollow of the wrench body with blocking function in order to provide the resuming force for the axial rotation of the ratchet head. In the foregoing structure, the oil filter can be held and rotated quickly when the release of dynamic force by the return rotation of the ratcheted head to drive the pair of clipping members to displace in reverse direction.

What is claimed is:  
     
         1 . An oil filter wrench, comprising: 
 a wrench body, having an axial hollow space at the center of a surface along one end of its axis, and each of the both surfaces of the axial hollow space has a sliding groove parallel to each other, and a driving device being disposed at the center of the surface along the other end of the axis for the mounting of a cylindrical driver;    a pair of clipping members being pivotally coupled to two sliding grooves of the wrench body by means of sliding displacement, and its thickness corresponds with the parallel position and has serrations on them, and a tong is disposed on each end of the corresponding axes for interlocking with a circular edge of the oil filter;    a ratcheted gear head being disposed at the axial hollow space of the wrench body by means of the predetermined pivotal coupling, and a gear section being disposed at the external diameter of the surface along the axial direction for mutual coupling with a pair of serrations of the clipping member, and a ratchet section being disposed at the lower external diameter of the surface along the axial direction and one of its end is for pivotally coupling a ratchet claw with blocking function; an elastic component is single-directionally coupled to the axial hollow of the wrench body with blocking function in order to provide the resuming force for the axial rotation of the ratchet head;    thereby in the foregoing structure, the oil filter can be held and rotated quickly when the release of dynamic force by the return rotation of the ratcheted head to drive the pair of clipping members to displace in reverse direction.    
     
     
         2 . An oil filter wrench as claimed in  claim 1 , wherein has a chamber groove to pivotally accommodate said ratcheted claw at the appropriate position on the lateral side of the axial hollow of the wrench body, and an elastic member disposed on its side to act as a stopper; said ratcheted claw has a pressing end at its front end to top the ratchet section of the ratchet gear head in a single direction, and its end extends to pass through said groove chamber and exposes to the link rod section outside the wrench body such that the separation between the ratcheted claw and the ratchet gear section is controlled by rotating the oil filter wrench.